When you enter a domain name into your browser, a DNS lookup is initiated. The process starts with a query to the Recursive Resolver, which then queries the Root Nameservers. These direct the query to the TLD (Top-Level Domain) Nameservers, which, in turn, point to the domain's authoritative Nameservers. These authoritative Nameservers respond with the requested DNS record, allowing the browser to connect to the correct server using the IP address obtained.
DNS查找过程中使用的DNS服务器类型:
- 递归解析器:接收来自客户端的查询然后查询其他 DNS 服务器以将域名解析为 IP 地址的 DNS 服务器。- 根域名服务器:它们响应对根区域记录的查询,并将查询引导到适当的顶级域名(TLD)服务器。- TLD(顶级域名)名称服务器:处理特定顶级域的查询,并将查询引导至相关域的适当权威名称服务器。- 权威名称服务器:提供DNS查询的最终答案,包含域名的实际DNS记录,并将请求的信息返回给递归解析器。